Trolley-wheel.



No. 762,823. PATENTED JUNE 14, 1904.

v S. J. HANLIN.

TROLLEY WHEEL.

APPLICATION FILED MAR. 29. 1904. N0 MODEL.

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UNITED STATES Patented. June 14, 1904.

PATENT OFFICE.

TROLLEY-WHEEL.

SPECIFICATION forming part of Letters Patent No. 762,823, dated June 14, 1904.

Application filed March 29, 1904.

To (LZZ/ whom it may concern.-

Be it known that I, STEWART J. HANLIN, a

. citizen of the United States of America, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Trolley- VVheels, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to trolleywheels, and has for its object to provide wheels of this character which may be readily attached to any ordinary form of trolleypole now in use, means being provided in connection with the trolley-wheels whereby the possibility of the same being displaced is reduced to a minimum.

Another object of my invention is to provide trolley-wheels of such a construction that when the same are placed upon the wire one of said wheels will always be in engagement with the trolley-wire and conform to the same when the wheels pass around curves, under bridges, and will not interfere with or obstruct the guide-wires and similar construction employed in supporting trolley-wires.

Briefly described, my invention comprises a yoke which is pivotally mounted in a harp of a trolley-pole, and upon this yoke is swiveled a bar, in the ends of which are journaled trolley-wheels which are, adapted to engage the trolley-wire. Means is provided in connection with the above-mentioned construction whereby the swiveled bar will be normally held in alinement with the trolley-pole.

With the above and other objects in view the many advantages of my improved trolleywheels will be apparent from the following description,taken in connection with the drawings accompanying this application, wherein like numerals of reference indicate like parts throughout the several views, in which Figure 1 is avertical sectional view, partly in elevation, of my improved trolley-wheels, showing the same mounted in the harp of a trolley-pole. Fig. 2 is a detail perspective view of the yoke. Fig. 3 is a perspective View of one end of the bar in which the trolley-wheels are journaled. Fig. 4 is a horizontal sectional view taken on the line :0 .r of

Serial No. 200,512. (No model.)

Fig. 1 looking in the direction of the arrow; and Fig. 5 is a top plan view of my improved trolley wheels, showing the swiveled bar swung around in dotted lines.

To put my invention into practice, I employ the ordinary trolley-pole and harp, in which are mounted my improved trolley-wheels and ing arms I 4 provided with apertures 5 5,

through which the pin 2 of the harp passes, and in the top of said yoke I form an aperture 6, through which passes a bolt 7, said bolt carrying a head 8, a square shank portion 9, and screw-threads 10 upon its lower end, this bolt being employed to swivel the bar 11 upon the top of said yoke, the square shank portion 9 passing through the square aperture 12, formed centrally in said bar, and the end of the bolts passes through aperture 6, and upon the screw-threaded end of this bolt is secured a nut 12. The lower. end of the bolt is provided with an aperture 1 1, through which are passed two spring-keys 15, the object of which will be hereinafter more fully described. The bar 11 has its outer ends bifurcated, as indicated at 16, the arms 17 17 being provided with apertures 18 18,through which the pins 19 pass and are keyed therein, and uponthese pinsv are journaled the trolley-Wheels 20, which are slightly smaller than the ordinary trolleywheel now used.

By the construction of my trolley-wheels it will be seen that they are journaled in a swiveled arm, whereby as the trolley-pole passes around a curve the wheels will conform to the wire, and in case the trolley-wheels should be wire, and it will be seen that always one of said said pole, a bar carried by said yoke, a bolt passing through said bar and said yoke, spring- 5 keys secured through the end of said bolt and adapted to engage the side arms of the yoke, trolley-wheels journaled in the outer ends of said bar, substantially as described.

- In testimony whereof I affix my signature in 20 the presence of two Witnesses.

STEWART J. HANLIN.

Witnesses:

E. E. POTTER, K. H. BUTLER. 

